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Correct Part B Another first-order reaction also has a rate constant of 2.05x10-2 s-1 at 24 °C. What is the value of k at 58 °C if Ea = 125 kJ/mol ? Express your answer using two significant figures. ? k = 9.0 Submit Previous Answers Request Answer X Incorrect; Try Again; 18 attempts remaining

Correct Part B Another first-order reaction also has a rate constant of 2.05x10-2 s-1 at 24 °C. What is the value of k at 58 °C if Ea = 125 kJ/mol ? Express your answer using two significant figures. ? k = 9.0 Submit Previous Answers Request Answer X Incorrect; Try Again; 18 attempts remaining

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Part b please

A certain first-order reaction has a rate constant of 2.05×10-2 s1 at 24 °C. What is the value of k at 58 °C if E. = 71.0 kJ/mol ? Express your answer using two significant figures. k = 0.39 s1 Submit Previous Answers Correct Part B Another first-order reaction also has a rate constant of 2.05×10-2 s1 at 24 °C. What is the value of k at 58 °C if Eq = 125 kJ/mol ? Express your answer using two significant figures. V ΑΣφ ? k = 9.0 Submit Previous Answers Request Answer X Incorrect; Try Again; 18 attempts remaining
Transcribed Image Text:A certain first-order reaction has a rate constant of 2.05×10-2 s1 at 24 °C. What is the value of k at 58 °C if E. = 71.0 kJ/mol ? Express your answer using two significant figures. k = 0.39 s1 Submit Previous Answers Correct Part B Another first-order reaction also has a rate constant of 2.05×10-2 s1 at 24 °C. What is the value of k at 58 °C if Eq = 125 kJ/mol ? Express your answer using two significant figures. V ΑΣφ ? k = 9.0 Submit Previous Answers Request Answer X Incorrect; Try Again; 18 attempts remaining
Expert Solution
Step 1

Given that, a First order reaction has

Temperature T1 = 24°C = 297 K

Rate constant k1 at T1 = 2.05×10-2 s-1

activation energy = 125 KJ/mol

And temperature T2 = 58°C = 331 K

Rate constant k at T2 = to be calculated. 

Arrhenius equation for the rate constant k1k can be written as:

k1 = Ae-Ea/RT1        ... (1) 

and for the rate constant k can be written as;

k = Ae-Ea/RT2      ... (2) 

 

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